That's incredible, thanks for sharing! Looks like it's still working on supporting some APIs (claims to currently support about 70% of Web Extensions APIs), and so far both the Firefox and Chrome NoScript extension don't appear to work for me on iOS, but that's awesome that they're working on adding support for Chrome and Firefox addons. I'll definitely keep an eye on this project.
Currently the ublock origin and dark reader I have tried with the Firefox extensions work very well, but I haven’t tried any others so it is good to know.
As it stands right now, there is essentially no windows support or support for the various browser sync plugins, but both of those are on the way. The main developer seems like a nice dude, and I’ve had a chat with him on Reddit a couple times so it is definitely a VERY active project.
The API is at the same state across all versions of Orion as far as I can tell, which means that at the point it works on your iPhone it will also work on iPad. I would guess that it will be quite soon considering even a couple of weeks ago uBlock didn't work 100% and now it is fully functional.